英语词汇Appleton layer的读音、用法、中文释义、短语词组及例句-英汉双解词典

单词	Appleton layer
释义	Appleton layer 英?[??plt?n ?lei?] 美?[??p?lt?n ?le?] 释义阿普顿层英英释义 Noun 1. the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
随便看	pre-crashes precrastinator precray precreative pre-creative pre credit precredit pre credit u.s.tax precredit U.S.tax precremation precreping precrestination precribrum precrime pregn. Pregn-4-en-3-one,20-alpha-hydroxy- Pregn 4 en 3 one,20 alpha hydroxy Pregn-4-ene-3,20-dione pregnabilities pregnability pregnable pregnada pregnadiene pregnadienediol pregnadienediols

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Appleton layer